I have to say, going through the threads here has been very insightful. While I'm not in any position to make any big change, I certainly try to do my part. I spent a good portion of my day focusing on taking down replica watches. While I can't divulge too much, we do everything we can to protect ebays members from fraudulent listings.
I saw a post a little higher up about the process and I do want to point something out. We will force a return/refund on anything the buyer thinks is fake. If someone gets an item that they think isn't authentic, we have them send it back. If they can get a certificate of non-authenticity, we just refund and make them destroy it (if the dealer who checked it didn't confiscate the item already).
We can't catch all the fakes but we do our best. I'll be lurking more on this site because I'm in the market for a nice Breitling Navitimer. Please keep reporting these and posting links. I'll be watching when I can.